华中电网WAMS实测区域低频振荡仿真

Simulation of Regional Low Frequency Oscillation Based on Data Measured by WAMS of Central China Power Grid

2008年冰灾期间,华中电网广域测量系统(wide area measure system,WAMS)多次记录到低频振荡事件。文中以1月21日03:31:39WAMS实测的典型区域低频振荡事件为例,利用电力系统分析综合程序6.25对其进行了仿真分析,通过频域和时域稳定计算对其进行了重现。结合选定的能量管理系统、WAMS实测运行方式及其录波数据,对潮流电压及低频振荡的静态和动态特性进行了仿真,分析了低频振荡产生的原因、振荡特点及其抑制措施,为华中电网的生产运行和发展规划提供了参考,同时对有关静态及动态模型参数和计算工具的工程可信度进行了校核,为电力系统的仿真计算提供了借鉴。

During the icing disaster occurred in 2008, the wide area measure system （WAMS） of Central China power grid had been recorded many times of low frequency oscillation. In this paper, taking the WAMS-measured typical regional low frequency oscillation accident occurred at 03：31：39, January 21st, 2008 for example, by use of power system analysis software package （PSASP） v.6.25 the simulative analysis of this accident is pertbrmed, and by means of stability calculation in time domain and frequency domain this accident is reproduced. Based on the selected EMS, WAMS-measured operation mode and recorded data, the power flow, the voltage and the static and dynamic characteristics of low frequency oscillation are simulated; the reason causing low frequency oscillation, the features of oscillation and suppression measures are analyzed, meanwhile, the related parameters of static and dynamic model as well as the engineering confidence level of calculation tool are checked to offer reference for power system simulative calculation. Besides, the analysis results are available for reference to the production operation and development planning of Central China power grid.